Vocabulary Word for today:

umlaut may refer to:

Diaeresis (diacritic), a pair of dots ( ) above a vowel, used in German to mark umlaut
Metal umlaut, the same diacritic in names of heavy metal or hard rock bands for effect
I-mutation or umlaut, historic vowel fronting or raising in any language
Germanic umlaut, this process in Germanic languages
Affection (linguistics), this process in Celtic languages
Regressive vowel harmony
Umlaut vowel can refer to any front rounded vowel:
Close front rounded vowel [y]
Close-mid front rounded vowel []
Open-mid front rounded vowel [œ]
Open front rounded vowel [ɶ]
Lars Umlaut, a character playable in the Guitar Hero series of music video games
Umlut, Clinton McKinnon’s experimental Australian rock band

Regressive Vowel Harmony?